of chicago



Patented Oct. 28, 1919.

C. M. ANGELL.

BATTERY GOVER CDNNECTION.

ARPLICATIOH FILED SEPT. 24, 5928.

W W W Mammut? UNITED s'rATs PATENT OFFIC.

CHESTER M. ANGELL. OF CHICAGO. ILLINOIS. ASSIGNOR T0 VESTA ACCUMULA'I'OB COMPNY` OF CHICAGO. IIIiLINOISI A CORPORATION OF ILLINOIS.

BATTERY-GOVER CONNECTION.

specification of Letters Patent.

Patented Oct. 28, 1919.

iippneanon ine sepiiniizr 24. 1818. seriali m.- smieci.

` posts extend to the outside fm'i'onnertion with an electric Circuit. i,

' 'l`l1e problem of sealing the openings in the cover plates afterltlic terminal pos in final position has heen npproacliod h fore in various ways :md aceompli various st'i'ncturnl. irljnngements.

It is the'ohject'of'the present inre provide a senl which;i'sexcoedingill in structure andup 'ilicatioin can replaced andis relinliloiii its` funi'.

, ln order to more,fnliyexphtin the' ter of the invention Vreference lni a ppeuded dra w ings` Vinj \vl iiclio' 1 Fignre 1 is an eleviitional view,` p

section, of a. battery 'soul enibodyiingL ie vention; i Fig. 2 is a vertieiil section illnsti'at g way iii which the invontion may. be

out; und i i Fig. 3 is ii Vertical section siniiliir to?r invention. i i,

In the dmwings 1 represents the battery casing, 2 the cover plate,1.3 an electrode"`=4= the nsnnl strop for intereonnei'ti'ngall electrodes of the some poliirity and 5 :i terminiil' post extending through an opening in the cover plate 2. The posti has a shonlde'r to form ii seat fo'r the cover plate. Interine-' diete this shonlder G end the cover plate' is placed ii giisket 7 of rubber or other suitable parking material and the cover plate 2 is provided with a. depending flange 8 formin a wall around the gasket. The pnrpose 'o this iange 8 is to confine the giisket so between the cover plate 2 end the shonlder that. it cannot be squeezed out of its normal position when the cover plate is pressed against the shonlder to insure ti'htni-ss.

Above the cover plate 2 the post 5 is provided with ii leaden ring o'r slecve 0 with which the present invention is principally Vmediiite the cover istroyingthe w ing its usefu ness. Above the' sleeveoi' f'rin' b'tende i Y Z,

After'tln.=`l battery 'is ini'assembl' tioir in ythe cesingand the` ;galsk idcntified. This ring, which' has the prpose to hold the cover plate 2 under pressure against the shouldei' 6 and to keep the'gasket .under such a condition of compresioninterf' plate and the? v:sl'ionldei'v that'it' doesk'not easlly lose its efetiveness as asel, is'so secured to the post tlit itliny 9 and contneting with it'is e'terinin'el 1 which may be of any suitble' rferred type. This terminal 10 fits over t e end of the postand is prefembly bui'nel on it' to make a, relinble electrical connection' Figs. 2 andvillustrate two w'aysginjivlieh thering or'sleeve 9 mity .secure i the len'denz post toisatisfy iii-com ishf the Purpose' for `1s inf-Vv fin'ed between the cover 2 and lthe shoiilde'f '6 ,ii snitul'i'le'tool is applied: 'tofpress'tlileoveii' .v plate Q-Vagainstltlie shouldr fenclihfold it 'under``` res'si'n'euntil therin or sleeliffeis secure vtothe ost 5. rValv'hi ethere'isojcon sidei'ahle latitu e in the selection of tho tools suitable for ('zii'ryin outthis opei'ntion, I

have found the too illustrated vin xFigs; 2 und 3- to he pertieulerly4 adaptedfi for it. This tool' consists -pi'incipally of two parts, nainely en element for grppm the projecting end of the post end a secon element for engaging the ring or sleeve 9. The element for gri'pping the post consists of e cylindricel she 12 having at its lower end a. serew threaded socket y13 and at its upper end a handle 14. The element for en'g'eging the cover plate 2 consists of e tubular body 15 sul'i'ounding the shank 12 and having at its upper end u handle 16.- Reletive motion between .these two elements is producedhy means of an external thread 17 on the-shank i I the shank 12 until'the sleeve 9 has t 'means or me 'i ce handle 14 untii aV firrn. grip is obtained. Then the tubular element 15 is advanced on gripped the post and been forced home against the cover plate 2to1ut the gasket under the required degree o compression.

;In order to prevent such an intimate connection between the sleeve and the post or freezing-on that the seeve could not he removed without materially injuring the postthe thickness of thering is so chosen that a suitable compromise is eected between the degree of compression of the post and the degree of e'xpansion of. thelsleeve with the result that thesleeve grips the post sufliciently tightly to hold the packing rin Timder compression, butnot so that it coul not be removed. While this manner of modifyin the holdin capacity and the degree of reezing p uces entirely Satisfactory results,;reoourse'may be. had to other thods toV aocomplish the pur- The surface of post or the inner surof the sleeve or,l both may be coated vv'ith-a suitable substiiee, for instance graphite, tending' 'to vpreinantlor retard integrati'en. It is under-Stood' that the determmation of the' thicknes'ofi the ,sleeve or the selection of ptu'titullilr rting material is 'largely a'matter of 'go udgrnent and experience and no definite rules need be prescribedfor guidanoe.V

`.Afte`r the' sleeve has. beenA placed in the properVV ition, the toolfis :removed and the terminal cap'lO is p'laoedin-position and..

burned on. As has been previously stated,

this cap 10 is preferably so placed on the post that it bears ul on the slecve 9 and thereby practicaliy e iminatesthc possibilty of a stripping of the sleeve 9 from the st. c

Instead of forcing a sleeve upon 'the post, the sleeve may be cast on`the post while the cover-plate .is hold under pressure against the gasket 7. The tool for produc- ,ing this pressure is essentiall the same as i that shown in` Fig. 2 but di ers therefrom ,in that thei tubular element 20 has an extension 21' acting as a-mold. After the shank 22 is secured to the ost in the manner before described, the tn ular element 20 is foroed against the cover 1plate until the gasket 22 is compressedto t e required dcgree. Then the lead is poured into the spa/ce defined by the extension 21 and the post 23, an opening 24=-andva vent 25 being provided for that purpose.` The cleava ve between the sleeve 9 ths formcd and t e post may be prescrved b the same means or similar means as descri ed before. If the sleeve is made relatively thin, the nmterial necessary for casting it does not communiall suitable non gripping tool, such as a piers4 or p'ipewrench is normully suiiicient to break the connection between it and the post. If erchance the connection should be tightert an .intended, the sleeve may be slitted and dreadily twislted off. Under 'no circumstancesit is necessary to unduly mutiliate the post or destroy it. The sea] is absolutely reliable,

since there is nothing that can' alter itscondition.

The rinlI maybe made of any suitable non corro( lible vmetal such as a lead-antimony alloyh The term 'fleaden in the claims is used in a broader sense to include' corrodble metals or alloys.`

I claim:--` 1. A sea] for a terminal terminal postmhaving an unthreadcd portioii and a shoulde` 1",' a cover having an opening through which1 the terminal ost extende, :a

paeking between the shoul cr ahd. 'cover and a removableI leaden ring gripping',r the unthreaded portion of the on-the cover late.

2. A seal oria'termi'nal post and a cover eomprising the combination of a london tapering'terminal post having an unthread'- ed portion. and`a shoulder, a cover having an opening through which the terminal ost I post and a cover' comprising f the eo bmation of a lcadcnpost and bearingA extends, a packing between the shou der andv cover and a 4re'movable lraden ring gripping the unthreadcd portion'of the post and earing on the cover plate;

3. The method of forming'l a sealing connection between a battery cover andla shoul.

' dered terminal post extending through said cover and having a packing between the shoulder and cover, which consists in applying pressure .to thev cover plate to compress the packing and, while the pressure is maintained, fastening the cover and post together' by means of a ring gripping the post and bearingr on the cover.

4. The method of forming a sealing co'n-` nection between a battery oover and a shouldered terminal post extending through said cover and having a packing` 'between the shoulder and cover, whlch consists in applying pressure to the cover plate to comprcss i the paclciug and, while the pressure is maintained, fasteningthe cover and post together by fort-in over the post a ring to grip the post nm bear on the cover.

n tcstimony whoroof, I aifix my signature.

onEsTER M. ANGELL. 

